Just to clarify: I was not speaking about application stability, I spoke about the whole OS. I've never seen native Jolla apps crash, the Android apps also seem to be rather stable when they work. However the whole phone can die - the screen goes balck and the status LED starts to blink red - in the middle of usage or just when it seats in the pocket. The phone will restart in a half of a minute or so, but it's a rather infuriatingly when it does so when you try to answer a call.